The main purpose for the green-houses covering is to create an internal environment regardless the external environmental. The better the control the better the crop yield and quality. The controlled microclimate in term of light, temperature, humidity and physical protection of the crop (winds, rain snow etc) maintaining controlled environmental at different climatic condition. Controlling the internal environment gives the possibility to extend the growing season, fresh fruit all around the year and enhanced crop quality and crop yield. Cover film properties: basic properties: 1. High mechanical properties: 2.UV Stability (film durability): 3. Maximum light transmission at the visible range (TLT):